Chamberlain M350M User manual

The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.chamberlain.com
GARAGE DOOR OPENER
For Residential Use Only
Owner’s Manual
■Please read this manual and the enclosed safety materials carefully!
■Fasten the manual near the garage door after installation.
■The door WILL NOT CLOSE unless the Protector System®is connected and properly aligned.
■Periodic checks of the opener are required to ensure safe operation.
■The model number label is located on the front panel of your opener.
Model M3100M - 1/2HP
Model M350M - 1/3HP
®

2
Introduction 2-5
Safety symbol and signal word review . . . . . . . . . . . . . . . 2
Preparing your garage door . . . . . . . . . . . . . . . . . . . . . . . 3
Tools needed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Carton inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Hardware inventory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Assembly 6-7
Attach the rail to the motor unit . . . . . . . . . . . . . . . . . . . . 6
Attach the chain to the sprocket
and install the sprocket cover . . . . . . . . . . . . . . . . . . . . . . 6
Tighten the chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation 7-22
Installation safety instructions . . . . . . . . . . . . . . . . . . . . . 7
Determine the header bracket location . . . . . . . . . . . . . . . 8
Install the header bracket . . . . . . . . . . . . . . . . . . . . . . . . . 9
Attach the rail to the header bracket . . . . . . . . . . . . . . . . 10
Position the opener. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Hang the opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Install the door control . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Install the light(s) and lens(es) . . . . . . . . . . . . . . . . . . . . 13
Attach the emergency release rope and handle. . . . . . . . 13
Electrical requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Install the Protector System®. . . . . . . . . . . . . . . . . . 15-18
Fasten the door bracket. . . . . . . . . . . . . . . . . . . . . . . 19-20
Connect door arm to trolley . . . . . . . . . . . . . . . . . . . 21-22
Adjustment 23-25
Adjust the UP and Down travel limits . . . . . . . . . . . . . . . 23
Adjust the force. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Test the safety reversal system. . . . . . . . . . . . . . . . . . . . 25
Test the Protector System®. . . . . . . . . . . . . . . . . . . . . . . 25
Operation 26-30
Operation safety instructions . . . . . . . . . . . . . . . . . . . . . 26
Using your garage door opener . . . . . . . . . . . . . . . . . . . 26
Using the wall-mounted door control . . . . . . . . . . . . . . . 27
To open the door manually . . . . . . . . . . . . . . . . . . . . . . . 27
Care of your opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Having a problem? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Diagnostic chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Programming 31-32
To add or reprogram a hand-held remote control. . . . . . 31
To erase all codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3-Button remotes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
To add, reprogram or change
a Keyless Entry PIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Repair Parts 33-34
Rail assembly parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Installation parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Motor unit assembly parts . . . . . . . . . . . . . . . . . . . . . . . 34
Accessories 35
Repair Parts and Service 36
Warranty 36
TABLE OF CONTENTS
When you see these Safety Symbols and Signal Words on
the following pages, they will alert you to the possibility
of serious injury or death if you do not comply with the
warnings that accompany them. The hazard may come
from something mechanical or from electric shock. Read
the warnings carefully.
When you see this Signal Word on the following pages, it
will alert you to the possibility of damage to your garage
door and/or the garage door opener if you do not comply
with the cautionary statements that accompany it. Read
them carefully.
INTRODUCTION
Safety Symbol and Signal Word Review
This garage door opener has been designed and tested to offer safe service provided it is installed, operated, maintained
and tested in strict accordance with the instructions and warnings contained in this manual.
Mechanical
Electrical

3
Preparing your garage door
Before you begin:
• Disable locks.
• Remove any ropes connected to garage door.
• Complete the following test to make sure your garage
door is balanced and is not sticking or binding:
1. Lift the door about halfway as shown. Release the
door. If balanced, it should stay in place, supported
entirely by its springs.
2. Raise and lower the door to see if there is any
binding or sticking.
If your door binds, sticks, or is out of balance, call a
trained door systems technician.
Tools needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as illustrated
below.
To prevent damage to garage door and opener:
• ALWAYS disable locks BEFORE installing and
operating the opener.
• ONLY operate garage door opener at 120V, 60 Hz to
avoid malfunction and damage.
To prevent possible SERIOUS INJURY or DEATH:
• ALWAYS call a trained door systems technician if
garage door binds, sticks or is out of balance. An
unbalanced garage door may NOT reverse when
required.
• NEVER try to loosen, move or adjust garage door,
door springs, cables, pulleys, brackets or their
hardware, ALL of which are under EXTREME tension.
• Disable ALL locks and remove ALL ropes connected
to garage door BEFORE installing and operating
garage door opener to avoid entanglement.
Sectional Door
One-Piece Door
2
1
Carpenter’s
Level (Optional) Tape Measure
Pencil
Wire Cutters
Hack Saw
Claw Hammer
Adjustable End Wrench
Screwdriver
Pliers
Drill
Stepladder 1/2" and 7/16" Sockets
and Wrench
3/16", 5/16" and
5/32" Drill Bits

4
Planning
Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below apply
to your installation. Additional materials may be required. You may find it helpful to refer back to this page and the
accompanying illustrations as you proceed with the installation of your opener.
ONE-PIECE DOOR WITH TRACK
ONE-PIECE DOOR WITHOUT TRACK
SECTIONAL DOOR INSTALLATION
Horizontal and vertical
reinforcement is needed for
lightweight garage doors
(fiberglass, steel, aluminum,
door with glass panels, etc.).
See page 19 for details.
Header Wall
Header Wall
Motor Unit
Motor Unit
Wall-Mounted
Door Control
Wall-Mounted
Door Control
Safety Reversing
Sensor
Safety
Reversing
Sensor
Torsion Spring
OR
Door
Center
Extension Spring
Access
Door
Access
Door
Access
Door
Safety Reversing Sensor
Safety Reversing Sensor
Safety
Reversing
Sensor
Gap between floor and bottom of
door must not exceed 1/4" (6 mm).
Gap between floor and bottom of
door must not exceed 1/4" (6 mm).
Gap between floor and bottom of
door must not exceed 1/4" (6 mm).
Slack in chain
tension is normal
when garage door
is closed.
Slack in chain
tension is normal
when garage door
is closed.
Slack in chain tension is normal
when garage door is closed.
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 11.
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 11.

5
Carton Inventory
Your garage door opener is packaged in two cartons
which contain the motor unit and all parts illustrated
below. Accessories will depend on the model purchased.
If anything is missing, carefully check the packing
material. Parts may be stuck in the foam. Hardware for
installation is also listed below.
INSTALLATION HARDWARE
Hex Bolt 5/16"-18x7/8" (4)
Lag Screw 5/16"-9x1-5/8" (2)
Clevis Pin 5/16"x2-3/4" (1)
Clevis Pin 5/16"x1-1/4" (1)
Clevis Pin 5/16"x1" (1)
Nut 5/16"-18 (4)
Lock Washer 5/16" (4)
Screw 6ABx1-1/4" (2)
Screw 6-32x1" (2)
Self-Threading Screw 1/4"-14x5/8" (2)
Insulated Staples
Ring Fastener (3)
Drywall Anchors (2)
Rope
Handle
Carriage Bolt 1/4"-20x1/2" (2)
Wing Nut 1/4"-20 (2)
(Model M3100M)
(Model M3100M)
(Model M3100M)(Model M350M)
(Model M350M)
(Model M350M)
Remote Control
Visor Clip
SECURITY✚®
Single-Button
Remote Control
SECURITY✚®
3-Button
Remote Control
Lighted Door
Control Button with
6ABx1-1/2" Screws
Multi-Function
Door Control Panel
Light Lens (2)
Light Lens (1)
Sprocket Cover
Chain
Styrofoam
Curved Door
Arm Section
Door Bracket
2-Conductor Bell Wire
White & White/Red
Straight Door
Arm Section
Safety Reversing
Sensor Bracket (2)
Safety Labels
and
Literature
The Protector System®
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with 2-Conductor White & White/Black
Bell Wire attached
One-Piece
T-rail
Trolley
Chain
Pulley
Bracket
Header Bracket

6
ASSEMBLY STEP 1
Attach the Rail to the Motor Unit
To avoid installation difficulties, do not run the garage
door opener until instructed to do so.
• Remove the two washered bolts mounted in top of
motor unit.
• Position rail at a 45° angle to opener so one hole in rail
and motor unit line up.
• Thread one of the washered bolts part way in.
Use only these bolts! Use of any other bolts will cause
serious damage to door opener.
• Align rail and styrofoam over sprocket. Cut tape from
rail, chain and styrofoam.
• REMOVE STYROFOAM.
ASSEMBLY STEP 2
Attach the Chain to the Sprocket and Install
the Sprocket Cover
• Position chain over the sprocket. If necessary, loosen
the outer nut on the trolley to obtain more chain slack.
• Insert the second washered bolt. CAUTION: Use only
the bolt previously removed from motor unit!
• Tighten both bolts securely through the rail into the
motor unit as shown.
• Install the sprocket cover: Insert the back tab in the
slot. Squeeze the cover slightly and insert the front tab
in the slot on the mounting plate.
To avoid SERIOUS damage to garage door opener, use
ONLY those bolts/fasteners mounted in the top of the
opener.
To avoid possible SERIOUS INJURY to fingers from
moving garage door opener:
• ALWAYS keep hand clear of sprocket while operating
opener.
• Securely attach sprocket cover BEFORE operating.
USE ONLY THIS
TYPE AND SIZE
BOLT Washered Bolt
5/16"-18x1/2"
Styrofoam
Rail Hole
USE ONLY THIS
TYPE AND SIZE
BOLT
Washered Bolt
5/16"-18x1/2" Motor Unit
Sprocket
Sprocket Cover
Back Tab Slot
Front Tab Slot
Mounting Plate

7
ASSEMBLY STEP 3
Tighten the Chain
• Spin the inner nut and lock washer down the trolley
threaded shaft, away from the trolley.
• To tighten the chain, turn outer nut in the direction
shown (Figure 1).
• When the chain is approximately 1/2" (13 mm) above
the base of the rail at its midpoint, re-tighten the inner
nut to secure the adjustment.
Sprocket noise can result if chain is too loose.
When installation is complete, you may notice some chain
droop with the door closed. This is normal. If the chain
returns to the position shown in Figure 2 when the door is
open, do not re-adjust the chain.
NOTE: During future maintenance, ALWAYS pull the
emergency release handle to disconnect trolley before
adjusting chain.
NOTE: You may notice loosening of chain after
Adjustment Step 3 (Test the Safety Reversal System).
Check for proper tension and readjust chain if necessary.
Then repeat Adjustment Step 3.
You have now finished assembling your garage door
opener. Please read the following warnings before
proceeding to the installation section.
Figure 1
Figure 2
INSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
WARNING
WARNING
WARNINGWARNING
1. READ AND FOLLOW ALL INSTALLATION WARNINGS
AND INSTRUCTIONS.
2. Install garage door opener ONLY on properly balanced
and lubricated garage door. An improperly balanced
door may NOT reverse when required and could result
in SEVERE INJURY or DEATH.
3. ALL repairs to cables, spring assemblies and other
hardware MUST be made by a trained door systems
technician BEFORE installing opener.
4. Disable ALL locks and remove ALL ropes connected
to garage door BEFORE installing opener to avoid
entanglement.
5. Install garage door opener 7 feet (2.13 m) or more
above floor.
6. Mount emergency release within reach, but at least
6 feet (1.83 m) above the floor and avoiding contact
with vehicles to avoid accidental release.
7. NEVER connect garage door opener to power source
until instructed to do so.
8. NEVER wear watches, rings or loose clothing while
installing or servicing opener. They could be caught
in garage door or opener mechanisms.
9. Install wall-mounted garage door control:
• within sight of the garage door.
• out of reach of children at minimum height of
5 feet (1.5 m).
• away from ALL moving parts of the door.
10. Place entrapment warning label on wall next to
garage door control.
11. Place manual release/safety reverse test label in plain
view on inside of garage door.
12. Upon completion of installation, test safety reversal
system. Door MUST reverse on contact with a 1-1/2"
(3.8 cm) high object (or a 2x4 laid flat) on the floor.
To Tighten Inner Nut
Trolley
Chain
1/2" (13 mm)
Base of Rail Mid Length of Rail
To Tighten Outer Nut
Inner
Nut
Outer
Nut
Lock
Washer

8
INSTALLATION STEP 1
Determine the Header Bracket Location
Installation procedures vary according to garage door
types. Follow the instructions which apply to your door.
1. Close the door and mark the inside vertical centerline
of the garage door.
2. Extend the line onto the header wall above the door.
You can fasten the header bracket within 4 feet
(1.22 m) of the left or right of the door center only if
a torsion spring or center bearing plate is in the way;
or you can attach it to the ceiling (see page 9) when
clearance is minimal. (It may be mounted on the
wall upside down if necessary, to gain approximately
1/2" (1 cm).)
If you need to install the header bracket on a 2x4
(on wall or ceiling), use lag screws (not provided)
to securely fasten the 2x4 to structural supports as
shown here and on page 9.
3. Open your door to the highest point of travel as shown.
Draw an intersecting horizontal line on the header wall
above the high point:
• 2" (5 cm) above the high point for sectional door
and one-piece door with track.
• 8" (20 cm) above the high point for one-piece door
without track.
This height will provide travel clearance for the top
edge of the door.
NOTE: If the total number of inches exceeds the height
available in your garage, use the maximum height
possible, or refer to page 9 for ceiling installation.
To prevent possible SERIOUS INJURY or DEATH:
• Header bracket MUST be RIGIDLY fastened to
structural support on header wall or ceiling,
otherwise garage door might NOT reverse when
required. DO NOT install header bracket over drywall.
• Concrete anchors MUST be used if mounting header
bracket or 2x4 into masonry.
• NEVER try to loosen, move or adjust garage door,
springs, cables, pulleys, brackets, or their hardware,
ALL of which are under EXTREME tension.
• ALWAYS call a trained door systems technician if
garage door binds, sticks, or is out of balance. An
unbalanced garage door might NOT reverse when
required.
Unfinished
Ceiling
Header Wall Vertical
Centerline of
Garage Door
Level
(optional)
2x4
2x4 Structural
Supports
Highest
Point of
Travel
Highest
Point of
Travel
Door
Door
Pivot
Jamb
Hardware
One-piece door without track:
pivot hardware
One-piece door without track:
jamb hardware
Header Wall
Header Wall
8" (20 cm) 8" (20 cm)
Header Wall
2" (5 cm) 2" (5 cm)
Track
Highest
Point of
Travel
Highest
Point of
Travel
Door
Door
One-piece door with
horizontal track
Sectional door with
curved track
Track
Header Wall
OPTIONAL
CEILING
MOUNT
FOR
HEADER
BRACKET

9
INSTALLATION STEP 2
Install the Header Bracket
You can attach the header bracket either to the wall above
the garage door, or to the ceiling. Follow the instructions
which will work best for your particular requirements. Do
not install the header bracket over drywall. If installing
into masonry, use concrete anchors (not provided).
WALL HEADER BRACKET INSTALLATION
• Center the bracket on the vertical centerline with the
bottom edge of the bracket on the horizontal line as
shown (with the arrow pointing toward the ceiling).
• Mark the vertical set of bracket holes (do not use the
holes designated for ceiling mount). Drill 3/16" pilot
holes and fasten the bracket securely to a structural
support with the hardware provided.
CEILING HEADER BRACKET INSTALLATION
• Extend the vertical centerline onto the ceiling as
shown.
• Center the bracket on the vertical mark, no more than
6" (15 cm) from the wall. Make sure the arrow is
pointing toward the wall. The bracket can be mounted
flush against the ceiling when clearance is minimal.
• Mark the side holes. Drill 3/16" pilot holes and fasten
bracket securely to a structural support with the
hardware provided.
Header
Bracket
2x4 Structural
Support
Vertical Centerline
of Garage Door
Lag Screws
5/16"-9x1-5/8"
Vertical Centerline
of Garage Door
Door Spring
Highest Point
of Garage
Door Travel
Horizontal
Line
- Header Wall -
Wall Mounting Holes
Optional Wall
Mounting Holes
- Garage Door -
HARDWARE SHOWN ACTUAL SIZE
Lag Screw
5/16"-9x1-5/8"
Ceiling Mounting Holes
Door
Spring
6" (15 cm)
Maximum
Lag Screws
5/16"-9x1-5/8"
Header
Bracket
Vertical
Centerline of
Garage Door
Vertical
Centerline of
Garage Door
Garage Door
- Header Wall -
- Finished Ceiling -

10
INSTALLATION STEP 3
Attach the Rail to the Header Bracket
• Position the opener on the garage floor below the
header bracket. Use packing material as a protective
base. NOTE: If the door spring is in the way you’ll need
help. Have someone hold the opener securely on a
temporary support to allow the rail to clear the spring.
• Position the rail bracket against the header bracket.
• Align the bracket holes and join with a clevis pin
as shown.
• Insert a ring fastener to secure.
Clevis Pin 5/16"x2-3/4"
T-rail
Garage
Door
Clevis Pin
5/16"x2-3/4"
Chain
Pulley
Bracket
Temporary
Support
Ring Fastener
Rail
Header Bracket
Chain Pulley
Bracket
Header
Wall Header Bracket
INSTALLATION STEP 4
Position the Opener
Follow instructions which apply to your door type as
illustrated.
SECTIONAL DOOR OR ONE-PIECE DOOR WITH TRACK
A 2x4 laid flat is convenient for setting an ideal
door-to-rail distance.
• Remove foam packaging.
• Raise the opener onto a stepladder. You will need help
at this point if the ladder is not tall enough.
• Open the door all the way and place a 2x4 laid flat on
the top section beneath the rail.
• If the top section or panel hits the trolley when you
raise the door, pull down on the trolley release arm to
disconnect inner and outer sections. Slide the outer
trolley toward the motor unit. The trolley can remain
disconnected until Installation Step 12 is completed.
To prevent damage to garage door, rest garage door
opener rail on 2x4 placed on top section of door.
ONE-PIECE DOOR WITHOUT TRACK
A 2x4 on its side is convenient for setting an ideal
door-to-rail distance.
• Remove foam packaging.
• Raise the opener onto a stepladder. You will need help
at this point if the ladder is not tall enough.
• Open the door all the way and place a 2x4 on its side
on the top section of the door beneath the rail.
• The top of the door should be level with the top of
the motor unit. Do not position the opener more than
4" (10 cm) above this point.
RELEASED
Trolley
Release Arm
ENGAGED
Top of Door
Header Bracket
2x4 is used to
determine the
correct mounting
height from ceiling.
Door
Rail
2x4 is used to
determine the
correct mounting
height from ceiling.
HARDWARE SHOWN
ACTUAL SIZE
Ring Fastener

11
INSTALLATION STEP 5
Hang the Opener
Three representative installations are shown. Yours
may be different. Hanging brackets should be angled
(Figure 1) to provide rigid support. On finished ceilings
(Figure 2 and Figure 3), attach a sturdy metal bracket
to structural supports before installing the opener. This
bracket and fastening hardware are not provided.
1. Measure the distance from each side of the motor unit
to the structural support.
2. Cut both pieces of the hanging bracket to required
lengths.
3. Drill 3/16" pilot holes in the structural supports.
4. Attach one end of each bracket to a support with
5/16"-18x1-7/8" lag screws (not provided).
5. Fasten the opener to the hanging brackets with
5/16"-18x7/8" hex bolts, lock washers and nuts.
6. Check to make sure the rail is centered over the door
(or in line with the header bracket if the bracket is not
centered above the door).
7. Remove the 2x4. Operate the door manually. If the
door hits the rail, raise the header bracket.
NOTE: DO NOT connect power to opener at this time.
Figure 1
Figure 2
Figure 3
To avoid possible SERIOUS INJURY from a falling
garage door opener, fasten it SECURELY to structural
supports of the garage. Concrete anchors MUST be
used if installing ANY brackets into masonry.
Measure
Distance
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
(Not Provided)
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Bracket
(Not Provided)
Hidden
Support FINISHED CEILING
FINISHED CEILING
Structural
Support
(Not Provided)
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
(Not provided)
Lag Screws 5/16"-18x1-7/8"
(Not provided)
Lag Screws
5/16"-18x1-7/8"
(Not provided)
Lag Screws
5/16"-18x1-7/8"
HARDWARE SHOWN ACTUAL SIZE
Hex Bolt
5/16"-18x7/8" Lock Washer
5/16" Nut 5/16"-18

12
INSTALLATION STEP 6
Install the Door Control
Locate door control within sight of the door at a
minimum height of 5 feet where small children cannot
reach, and away from moving parts of the door and door
hardware. The installation surface must be smooth and
flat. If installing into drywall (Figure 1), drill 5/32" holes
and use anchors provided. For pre-wired installations
(as in new home construction), it may be mounted to
a single gang box (Figure 2). NOTE: After installation, a
green indicator light behind the cover will indicate proper
connection. If not lit, the Lock and Light features will not
function (reverse wires to correct).
1. Strip 1/4" of insulation from one end of bell wire
and connect to the two screw terminals on back of
door control by color: white wire to 2 and white/red
wire to 1. (Figure 3)
2. Lighted door control: Fasten to wall with 6ABx1-1/2"
self-tapping screws.
Multi-function door control: Remove cover by gently
prying on a side corner near the top of the cover with
a small flat head screwdriver (Figure 4). Fasten with
6ABx1-1/4" self-tapping screws (drywall installation) or
6-32x1" machine screws (into gang box) as follows:
• Drill and install bottom screw, allowing 1/8" to
protrude above wall surface.
• Position bottom of door control on screw head and
slide down to secure. Adjust screw for snug fit.
• Install top screw with care to avoid cracking plastic
housing. Do not overtighten.
• Insert bottom tabs and snap on cover. (To remove
cover after mounting, gently pry at top with paper
clip or small flat head screwdriver.)
NOTE: The push bar may stick if the door control is not
mounted on a smooth surface. If a click is not heard when
pressing the push bar, loosen the two mounting screws or
relocate the door control to a smoother surface.
3. (Standard installation only) Run bell wire up wall and
across ceiling to motor unit. Use insulated staples to
secure wire in several places. Do not pierce wire with a
staple, creating a short or open circuit.
4. Connect bell wire to the opener terminal screws as
follows: white to 2 and white/red to 1. (Figure 5)
5. Use tacks or staples to permanently attach entrapment
warning label to wall near door control, and manual
release/safety reverse test label in a prominent location
on inside of garage door.
NOTE: DO NOT connect the power and operate the opener
at this time. The trolley will travel to the full open position
but will not return to the close position until the sensor
beam is connected and properly aligned. See Safety
Reversing Sensor Instructions beginning on page 15.
HARDWARE SHOWN ACTUAL SIZE
To prevent possible SERIOUS INJURY or DEATH from
electrocution:
• Be sure power is NOT connected BEFORE installing
door control.
• Connect ONLY to 24 VOLT low voltage wires.
To prevent possible SERIOUS INJURY or DEATH from a
closing garage door:
• Install door control within sight of garage door,
out of reach of children at a minimum height of 5 feet
(1.5 m), and away from ALL moving parts of door.
• NEVER permit children to operate or play with door
control push buttons or remote control transmitters.
• Activate door ONLY when it can be seen clearly, is
properly adjusted, and there are no obstructions to
door travel.
• ALWAYS keep garage door in sight until completely
closed. NEVER permit anyone to cross path of closing
garage door.
2
1
RED WHT
WHT
-2
RED
-1
6ABx1-1/2" Screw
Lighted Door Control Button
6ABx1-1/4" Screw
(standard installation)
6-32x1" Screw
(pre-wired installation)
Insulated Staples
Drywall Anchors
Single Gang Box
To Replace Insert
Bottom Tabs First
To Replace Insert
Bottom Tabs First 24 Volt
Bell Wire
Bell Wire
Terminal
Screws
Top Mounting
Hole
PRE-WIRED
INSTALLATION
REMOVE COVER
MULTI-FUNCTION
DOOR CONTROL (BACK) DOOR CONTROL
BUTTON (BACK)
STANDARD
INSTALLATION
Figure 3
Figure 1 Figure 2
Figure 4
KG KG
1
3
9
7
5
1
3
9
7
5
23
1
Bell Wire
Light Button
Lock Button
Push
Button
Opener Terminal
Screws
Bottom
Mounting Hole
BACK PANEL
Figure 5
Push
Bar

13
INSTALLATION STEP 8
Attach the Emergency Release Rope and
Handle
• Thread one end of the rope through the hole in the
top of the red handle so “NOTICE” reads right side
up as shown. Secure with an overhand knot at least
1" (2.5 cm) from the end of the rope to prevent
slipping.
• Thread the other end of the rope through the hole in
the release arm of the outer trolley.
• Adjust rope length so the handle is 6 feet (1.83 m)
above the floor. Ensure that the rope and handle clear
the tops of all vehicles to avoid entanglement. Secure
with an overhand knot.
NOTE: If it is necessary to cut the rope, heat seal the cut
end with a match or lighter to prevent unraveling.
INSTALLATION STEP 7
Install the Light(s) and Lens(es)
INSTALL THE LIGHTS
• Install up to a 75 watt maximum light bulb in each
socket. Light bulb size should be A19, standard
neck only. The light(s) will turn ON and remain lit
for approximately 4-1/2 minutes when power is
connected. Then the light(s) will turn OFF.
• Use A19, standard neck garage door opener bulbs for
replacement.
INSTALL THE LENSES: (Model M3100M) Figure 1
• Slide lenses into guides. Snap bottom tabs into lens
slots.
• Reverse the procedure to remove the lenses.
INSTALL THE LENS: (Model M350M) Figure 2
• Locate and loosen (approximately 1/8") the two screws
near top of motor unit front panel. Position lens
against panel with slotted tabs directly below screws.
Slide lens up to seat tabs behind screws. Snap bottom
tabs of lens into panel slots. Retighten top panel
screws to secure lens.
NOTE: Use only standard light bulbs. The use of short
neck or speciality light bulbs may overheat the endpanel
or light socket.
Figure 1
Figure 2
To prevent possible OVERHEATING of the endpanel or
light socket:
• DO NOT use short neck or specialty light bulbs.
• DO NOT use halogen bulbs. Use ONLY incandescent.
To prevent damage to the opener:
• DO NOT use bulbs larger than 75W.
• ONLY use A19 size bulbs.
To prevent possible SERIOUS INJURY or DEATH from
a falling garage door:
• If possible, use emergency release handle to
disengage trolley ONLY when garage door is
CLOSED. Weak or broken springs or unbalanced
door could result in an open door falling rapidly and/
or unexpectedly.
• NEVER use emergency release handle unless garage
doorway is clear of persons and obstructions.
• NEVER use handle to pull door open or closed. If
rope knot becomes untied, you could fall.
Trolley Rope
Emergency
Release
Handle
Trolley
Release Arm
Overhand
Knot
Lens Guide
Lens Tab
Lens Tab
Lens Slot
Lens Slot
Panel
Screw
Light
Lens
75 Watt (Max) Light Bulb
75 Watt (Max) Light Bulb

14
INSTALLATION STEP 9
Electrical Requirements
To avoid installation difficulties, do not run the opener
at this time.
To reduce the risk of electric shock, your garage door
opener has a grounding type plug with a third grounding
pin. This plug will only fit into a grounding type outlet.
If the plug doesn’t fit into the outlet you have, contact a
qualified electrician to install the proper outlet.
If permanent wiring is required by your local code, refer
to the following procedure.
To make a permanent connection through the 7/8" hole in
the top of the motor unit:
• Remove the motor unit cover screws and set the cover
aside.
• Remove the attached 3-prong cord.
• Connect the black (line) wire to the screw on the brass
terminal; the white (neutral) wire to the screw on
the silver terminal; and the ground wire to the green
ground screw. The opener must be grounded.
• Reinstall the cover.
To avoid installation difficulties, do not run the opener
at this time.
To prevent possible SERIOUS INJURY or DEATH from
electrocution or fire:
• Be sure power is NOT connected to the opener, and
disconnect power to circuit BEFORE removing cover
to establish permanent wiring connection.
• Garage door installation and wiring MUST be in
compliance with ALL local electrical and building
codes.
• NEVER use an extension cord, 2-wire adapter, or
change plug in ANY way to make it fit outlet. Be sure
the opener is grounded.
RIGHT WRONG
PERMANENT WIRING
CONNECTION
Ground
Tab
Black
Wire
Black
Wire
White
Wire
White
Wire
Green
Ground
Screw
Ground
Wire

15
Facing the door from inside the garage.
INSTALLATION STEP 10
Install The Protector System®
The safety reversing sensor must be connected and
aligned correctly before the garage door opener will
move in the down direction.
IMPORTANT INFORMATION ABOUT THE SAFETY
REVERSING SENSOR
When properly connected and aligned, the sensor will
detect an obstacle in the path of its electronic beam.
The sending eye (with an amber indicator light) transmits
an invisible light beam to the receiving eye (with a green
indicator light). If an obstruction breaks the light beam
while the door is closing, the door will stop and reverse
to full open position, and the opener lights will flash
10 times.
The units must be installed inside the garage so that the
sending and receiving eyes face each other across the
door, no more than 6" (15 cm) above the floor. Either can
be installed on the left or right of the door as long as the
sun never shines directly into the receiving eye lens.
The mounting brackets are designed to clip onto the track
of sectional garage doors without additional hardware.
If it is necessary to mount the units on the wall, the
brackets must be securely fastened to a solid surface
such as the wall framing. Extension brackets (see
Accessories) are available if needed. If installing in
masonry construction, add a piece of wood at each
location to avoid drilling extra holes in masonry if
repositioning is necessary.
The invisible light beam path must be unobstructed. No
part of the garage door (or door tracks, springs, hinges,
rollers or other hardware) may interrupt the beam while
the door is closing.
Be sure power is NOT connected to the garage door
opener BEFORE installing the safety reversing sensor.
To prevent SERIOUS INJURY or DEATH from a
closing garage door:
• Correctly connect and align the safety reversing
sensor. This required safety device MUST NOT be
disabled.
• Install the safety reversing sensor so beam is NO
HIGHER than 6" (15 cm) above garage floor.
Safety Reversing Sensor
6" (15 cm) max. above floor Safety Reversing Sensor
6" (15 cm) max. above floor
Invisible Light Beam
Protection Area

16
INSTALLING THE BRACKETS
Be sure power to the opener is disconnected. Install
and align the brackets so the sensors will face each other
across the garage door, with the beam no higher than
6" (15 cm) above the floor. They may be installed in one of
three ways, as follows.
Garage door track installation (preferred):
• Slip the curved arms over the rounded edge of each
door track, with the curved arms facing the door. Snap
into place against the side of the track. It should lie
flush, with the lip hugging the back edge of the track,
as shown in Figure 1.
If your door track will not support the bracket securely,
wall installation is recommended.
Wall installation (Figures 2 & 3):
• Place the bracket against the wall with curved arms
facing the door. Be sure there is enough clearance for
the sensor beam to be unobstructed.
• If additional depth is needed, an extension bracket (see
Accessories) or wood blocks can be used.
• Use bracket mounting holes as a template to locate
and drill (2) 3/16" diameter pilot holes on the wall at
each side of the door, no higher than 6" (15 cm) above
the floor.
• Attach brackets to wall with lag screws (not provided).
• If using extension brackets or wood blocks, adjust
right and left assemblies to the same distance out from
the mounting surface. Make sure all door hardware
obstructions are cleared.
Floor installation (Figure 4):
• Use wood blocks or extension brackets (see
Accessories) to elevate sensor brackets so the lenses
will be no higher than 6" (15 cm) above the floor.
• Carefully measure and place right and left assemblies
at the same distance out from the wall. Be sure all door
hardware obstructions are cleared.
• Fasten to the floor with concrete anchors as shown.
HARDWARE SHOWN ACTUAL SIZE
Figure 4
Figure 3
Figure 2
Figure 1 DOOR TRACK MOUNT (RIGHT SIDE)
WALL MOUNT (RIGHT SIDE)
WALL MOUNT (RIGHT SIDE)
FLOOR MOUNT (RIGHT SIDE)
Safety
Reversing
Sensor
Bracket
Safety
Reversing
Sensor
Bracket
(Provided with
Extension Bracket)
Extension Bracket
(See Accessories)
Safety
Reversing
Sensor
Bracket
Safety
Reversing
Sensor
Bracket
Door
Track
Lip Indicator
Light
Lens
Lens
Lens
Carriage Bolt
1/4"-20x1/2" Wing Nut 1/4"-20 Staples
Lens
Attach with
Concrete Anchors
(Not Provided)
Indicator
Light
(Provided with
Extension Bracket) Indicator
Light
Lag Screws
(Not Provided)
Indicator
Light
Fasten Wood Block to Wall with
Lag Screws (Not Provided)

17
MOUNTING AND WIRING THE SAFETY
REVERSING SENSORS
Mounting:
• Slide a 1/4"-20x1/2" carriage bolt head into the slot
on each sensor. Use wing nuts to fasten sensors
to brackets, with lenses pointing toward each other
across the door. Be sure the lens is not obstructed by a
bracket extension (Figure 5).
• Finger tighten the wing nuts.
Option A - Installation Without Pre-Wiring:
• Run the bell wire from both sensors to the garage
door opener. Attach the wire to the wall and ceiling
with the staples (Figure 6).
Option B - Pre-Wired Installation:
If your garage already has wires installed for the safety
reversing sensors, follow the instructions below:
• Cut the end of the safety reversing sensor wire, making
sure there is enough wire to reach the pre-installed
wires from the wall (Figure 7).
• Separate the safety reversing sensor wires and strip
1/4" (6 mm) of insulation from each end. Choose two
of the pre-installed wires and strip 1/4" (6 mm) of
insulation from each end. Make sure that you choose
the same color pre-installed wires for each sensor
(Figure 8).
• Connect the pre-installed wires to the sensor wires with
wire nuts making sure the colors correspond for each
sensor (Figure 9).
Figure 5
Figure 6
Figure 7
Figure 9
Figure 8
Safety Reversing
Sensor Wires
Safety Reversing
Sensor Wires
White
White/Black
Not Provided
Pre-Installed
Wires
1/4"
(6 mm)
1/4"
(6 mm)
Pre-Installed
Wires
Wing Nut
1/4"-20
Lens
Carriage Bolt
1/4"-20x1/2"

18
ALIGNING THE SAFETY REVERSING SENSORS
• Plug in the opener. The indicator lights in both the
sending and receiving eyes will glow steadily if wiring
connections and alignment are correct.
The sending eye amber indicator light will glow regardless
of alignment or obstruction. If the green indicator light in
the receiving eye is off, dim, or flickering (and the invisible
light beam path is not obstructed), alignment is required.
• Loosen the sending eye wing nut and readjust, aiming
directly at the receiving eye. Lock in place.
• Loosen the receiving eye wing nut and adjust sensor
until it receives the sender’s beam. When the green
indicator light glows steadily, tighten the wing nut.
TROUBLESHOOTING THE SAFETY REVERSING SENSORS
1. If the sending eye indicator light does not glow steadily
after installation, check for:
• Electric power to the opener.
• A short in the white or white/black wires. These can
occur at staples, or at terminal connections.
• Incorrect wiring between sensors and opener.
• A broken wire.
2. If the sending eye indicator light glows steadily but the
receiving eye indicator light doesn’t:
• Check alignment.
• Check for an open wire to the receiving eye.
3. If the receiving eye indicator light is dim, realign either
sensor.
NOTE: When the invisible beam path is obstructed or
misaligned while the door is closing, the door will reverse.
If the door is already open, it will not close. The opener
lights will blink 10 times. See page 15.
Connect to garage door opener:
• Strip 1/4" (6 mm) of insulation from each set of wires.
Separate white and white/black wires sufficiently to
connect to the opener terminal screws: white to 2 and
white/black to 3 (Figure 10).
Figure 10 - Finished Ceiling -
Bell Wire
Bell Wire
Connect Wire to
Opener Terminal Screws
Safety
Reversing
Sensor
Safety
Reversing
Sensor
Invisible Light Beam
Protection Area
OPENER TERMINAL SCREWS
Door Control Connections
(Dotted Line) Safety Reversing Sensor Connections
1/4" (6 mm)1. Strip wire 1/4" (6 mm)
2. Connect to the opener terminal screws

19
Fiberglass, aluminum or lightweight steel garage
doors WILL REQUIRE reinforcement BEFORE
installation of door bracket. Contact your door
manufacturer for reinforcement kit.
INSTALLATION STEP 11
Fasten the Door Bracket
Follow instructions which apply to your door type as
illustrated below or on the following page.
A horizontal reinforcement brace should be long
enough to be secured to two or three vertical supports.
A vertical reinforcement brace should cover the height
of the top panel.
Figure 1 shows one piece of angle iron as the horizontal
brace. For the vertical brace, 2 pieces of angle iron are
used to create a U-shaped support. The best solution is to
check with your garage door manufacturer for an opener
installation door reinforcement kit.
NOTE: Many door reinforcement kits provide for direct
attachment of the clevis pin and door arm. In this case
you will not need the door bracket; proceed to Step 12.
SECTIONAL DOORS
1. Center the door bracket on the previously marked
vertical centerline used for the header bracket
installation. Note correct UP placement, as stamped
inside the bracket.
2. Position the top edge of the bracket 2"-4" (5-10 cm)
below the top edge of the door, OR directly below any
structural support across the top of the door.
3. Mark, drill holes and install as follows, depending on
your door’s construction:
Metal or light weight doors using a vertical angle iron
brace between the door panel support and the door
bracket:
• Drill 3/16" fastening holes. Secure the door bracket
using the two 1/4"-14x5/8" self-threading screws.
(Figure 2A)
• Alternately, use two 5/16" bolts, lock washers and nuts
(not provided). (Figure 2B)
Metal, insulated or light weight factory reinforced
doors:
• Drill 3/16" fastening holes. Secure the door bracket
using the self-threading screws. (Figure 3)
Wood Doors:
• Use top and bottom or side to side door bracket holes.
Drill 5/16" holes through the door and secure bracket
with 5/16"x2" carriage bolts, lock washers and nuts
(not provided). (Figure 4)
NOTE: The 1/4"-14x5/8" self-threading screws are not
intended for use on wood doors.
Figure 1
Figure 2A
Figure 3
Figure 4
Figure 2B
HARDWARE
SHOWN
ACTUAL SIZE
Vertical
Reinforcement
Vertical
Reinforcement
Vertical
Centerline
of Garage
Door
Vertical
Centerline of
Garage Door
UP
Self-Threading
Screw
1/4"-14x5/8"
Self-Threading
Screw
1/4"-14x5/8"
Vertical
Centerline of
Garage Door
Door
Bracket
Self-Threading
Screw 1/4"-14x5/8"
UP
UP
Nut
5/16"-18
Lock
Washer
5/16"
Door
Bracket
Bolt
5/16"-18x2"
(Not
Provided)
Vertical
Centerline
of Garage
Door
UP
Bolt 5/16"x2"
(Not Provided)
Inside Edge
of Door or
Reinforcement
Board
Header
Bracket
Door
Bracket
Location
Vertical
Centerline
of Garage
Door
HORIZONTAL AND VERTICAL
REINFORCEMENT IS NEEDED
FOR LIGHTWEIGHT GARAGE
DOORS (FIBERGLASS,
ALUMINUM, STEEL, DOORS
WITH GLASS PANEL, ETC.).
(NOT PROVIDED)

20
ONE-PIECE DOORS
Please read and comply with the warnings and
reinforcement instructions on the previous page. They
apply to one-piece doors also.
• Center the door bracket on the top of the door, in line
with the header bracket as shown. Mark either the left
and right, or the top and bottom holes.
• Metal Doors: Drill 3/16" pilot holes and fasten the
bracket with the 1/4"-14x5/8" self-threading screws
provided.
• Wood Doors: Drill 5/16" holes and use 5/16"x2"
carriage bolts, lock washers and nuts (not provided) or
5/16"x1-1/2" lag screws (not provided) depending on
your installation needs.
NOTE: The door bracket may be installed on the top edge
of the door if required for your installation. (Refer to the
dotted line optional placement drawing.)
HARDWARE SHOWN
ACTUAL SIZE
Self-Threading Screw
1/4"-14x5/8"
Header
Wall Header
Bracket 2x4
Support
- Finished Ceiling -
Top of Door
(Inside Garage)
Top Edge
of Door
Optional
Placement
METAL DOOR
Lock Washer
5/16"
Top Edge
of Door
Top of Door
(Inside Garage)
Optional
Placement
Carriage Bolt 5/16"x2"
(Not Provided)
WOOD DOOR
For a door with no exposed framing, or for the
optional installation, use lag screws 5/16"x1-1/2"
(Not Provided) to fasten door bracket.
HORIZONTAL
AND VERTICAL
REINFORCEMENT
IS NEEDED FOR
LIGHTWEIGHT
GARAGE DOORS
(FIBERGLASS,
ALUMINUM,
STEEL, DOORS
WITH GLASS
PANEL, ETC.).
(NOT PROVIDED)
Optional
Placement
of Door
Bracket
Vertical
Centerline
of Garage
Door
Door
Bracket
Nut
5/16"-18
Door
Bracket
Door
Bracket
Self-Threading Screw
1/4"-14x5/8"